In the internet there are several sites with info about mods (clock, power supply, passive parts, analogue post-DACs output stage, mechanical damping, connectors, etc). Do a google with "Denon mods" or "denon 2900 mods". I hope you find the manual useful.

I'm interested in upgrading my Denon DVD2930, and I'd be very grateful if somebody could tell me where to find the service manual. It seems that it is easy to find it only for players rather old, and the DVD2930 was launched only a couple of years ago... Please... Can anybody help...?